Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Heater Blower Controls System Check? | -- | Go to Step 2 | |
2 |
Did the test lamp light? | -- | Go to Step 3 | Go to Step 4 |
3 | Connect a test lampJ 35616-200 between CKT 1172 (YEL) and CKT 1150 (BLK) at the rear heater blower motor. Did the test lamp light? | -- | Go to Step 5 | Go to Step 6 |
4 |
Did the test lamp light? | -- | Go to Step 7 | Go to Step 8 |
5 | Inspect for a poor connection at the rear heater blower motor. Does a poor connection exist? | -- | Go to Step 23 | Go to Step 10 |
6 | Repair the open in CKT 1150 (BLK) between the rear heater motor and ground G301. Is the repair complete? | -- | -- | |
7 | Connect a test lampJ 35616-200 from CKT 141 (BRN) cavity A7 at the A/C relay (rear) to ground. Did the test lamp light? | -- | Go to Step 11 | Go to Step 12 |
8 | Check that the RR HEAT/ A/C Maxi Fuse is not open. Is the RR HEAT/ A/C maxi Fuse open? | -- | Go to Step 24 | Go to Step 9 |
9 | Repair the open in CKT 742 (RED) between the rear heat - A/C relay (rear) (underhood fuse-relay center) and the rear heat - A/C maxi fuse M2 (underhood fuse-relay center). Is the repair complete? | -- | -- | |
10 | Replace the rear heater blower motor. Refer to Auxiliary Blower Motor Replacement . Is the repair complete? | -- | -- | |
11 | Connect a test lamp J 35616-200 from CKT 141 (BRN) cavity A7 to CKT 850 (BLK) cavity B9 at the A/C relay (rear). Did the test lamp light? | -- | Go to Step 13 | Go to Step 14 |
12 | Repair the open in CKT 141 (BRN) between the A/C relay (rear) and the instrument panel fuse block. Is the repair complete? | -- | -- | |
13 |
Did the test lamp light? | -- | Go to Step 15 | Go to Step 16 |
14 | Repair the open in CKT 850 (BLK) between the A/C relay (rear) and ground G104. Is the repair complete? | -- | -- | |
15 | Use a test lamp J 35616-200 in order to backprobe from the rear heater switch CKT 1923 (ORN) cavity B7 to ground. Did the test lamp light? | -- | Go to Step 17 | Go to Step 18 |
16 | Replace the A/C relay (rear). Is the replacement complete? | -- | -- | |
17 | Use a test lampJ 35616-200 in order to backprobe from the rear heater switch CKT 1924 (WHT) cavity A to ground. Did the test lamp light? | -- | Go to Step 19 | Go to Step 20 |
18 | Repair the open in CKT 1923 (ORN) between the rear heater switch and the A/C relay (rear). Is the repair complete? | -- | -- | |
19 | Use a test lampJ 35616-200 in order to backprobe from the rear heater resistor pack CKT 1924 (WHT) cavity B to ground. Did the test lamp light? | -- | Go to Step 21 | Go to Step 22 |
20 | Replace the rear heater switch. Refer to Control Switch Replacement - Auxiliary . Is the repair complete? | -- | -- | |
21 | Repair the open in CKT 1172 (YEL) between the rear heater resistor pack and the rear heater blower motor. Is the repair complete? | -- | -- | |
22 | Repair the open in CKT 1924 (WHT), CKT 1925 (RED) and CKT 1926 (DK BLU) between the rear heater switch and the rear heater resistor pack. Is the repair complete? | -- | -- | |
23 | Repair poor connection at the rear heater blower motor. Is the repair complete? | -- | -- | |
24 | Locate and repair source of overload. Replace RR HEAT/ A/C Maxi Fuse. Is the repair complete? | -- | -- |
